-3HG, 4HG, 4K Features: 1. Meehanite castings 2. Hardende&ground cross slide way and bable 3. High precision 7207 CP4 spindle bearings. 4. Turcite-B coated on the cross and longitudinal way 5. DOVETAIL WAY-X, Y, Z axis 6. Square way-Y axis(Optional TZ-4HG) 7. Square way-Y, Z axis(Optional TZ-4K) 8. Main axis precision: Radial skip of the main bore End-side near to the main axis: 0.01mm 300mm away from the end-side of the main axis: 0.02mm Radial skip of the centering axis neck of main axis: 0.005mm 9. The surface thermal treatment is not less than HRC50°
